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Trouble with the AD converter



Hello I am using the DSP2833x ADC Example Program. While the controller is converting, there are very strange results in the Result Registers. The values are jumping in a wide range. The measured values in the voltage1 array look like this:

[1]    61    Uint16    unsigned   
[2]    61    Uint16    unsigned   
[3]    61    Uint16    unsigned   
[4]    61    Uint16    unsigned   
[5]    53    Uint16    unsigned   
[6]    61    Uint16    unsigned   
[7]    1      Uint16    unsigned  
[8]    61    Uint16    unsigned   
[9]    61    Uint16    unsigned

 

When there is 0V at the pin I get this values:

Voltage2    49162    unsigned int[10]    dec    Edited
[0]    41    Uint16    dec    Edited
[1]    38    Uint16    dec    NotEdited
[2]    39    Uint16    dec    Edited
[3]    45    Uint16    dec    Edited
[4]    39    Uint16    dec    Edited
[5]    45    Uint16    dec    Edited
[6]    45    Uint16    dec    NotEdited
[7]    45    Uint16    dec    Edited
[8]    37    Uint16    dec    Edited
[9]    34    Uint16    dec    Edited

As input voltage I am using a dc signal. I tried different signals from 1-3 voltage and I get this strange results all the time. The values are jumping in a wide. What can I do? Please help!